-91.63% is the change from 836 to 70
Calculation steps:
[( 70 - 836 ) ÷ 836] x 100 = -91.63%
Formula
Percentage change = [(70 - 836) / 836] x 100
Subtract the new number by the original number
70 - 836 = -766
-766 ÷ 836 = -0.916267942583732
-0.916267942583732 x 100 = -91.63%