-82.3% is the change from 836 to 148
Calculation steps:
[( 148 - 836 ) ÷ 836] x 100 = -82.3%
Formula
Percentage change = [(148 - 836) / 836] x 100
Subtract the new number by the original number
148 - 836 = -688
-688 ÷ 836 = -0.8229665071770335
-0.8229665071770335 x 100 = -82.3%