-97.01% is the change from 836 to 25
Calculation steps:
[( 25 - 836 ) ÷ 836] x 100 = -97.01%
Formula
Percentage change = [(25 - 836) / 836] x 100
Subtract the new number by the original number
25 - 836 = -811
-811 ÷ 836 = -0.9700956937799043
-0.9700956937799043 x 100 = -97.01%