It was reduction in industrial growth (from 11% to 10%), not production. Even BBS cannot pull off a lie like that.
http://www.thedailystar.net/frontpage/record-growth-tough-year-1492489
There are discrepancies in the underlying indicators as quoted by the WB guy, but that is somewhat because Bangladesh is stuck in GDDS accounting (and stuck in it like it has been stuck in LDC category for decades now), does not want to improve and has not even revamped its SNA accounting (still using SNA 1993) yet.
Even with all of that done there will be unaccounted economy playing tricks on the accounted numbers....with probably large troughs and peaks till wealth/liquidity/production is brought magnitudes higher to even it out....it is the nature of sampling regimes in underdeveloped country.
Treat only what you can confirm 3rd party wise and neutrally (say foreign trade, investment given another country has to vet it) with a reasonable crediblity. Everything internal is largely he says, she says for BD.