-91.51% is the change from 836 to 71
Calculation steps:
[( 71 - 836 ) ÷ 836] x 100 = -91.51%
Formula
Percentage change = [(71 - 836) / 836] x 100
Subtract the new number by the original number
71 - 836 = -765
-765 ÷ 836 = -0.9150717703349283
-0.9150717703349283 x 100 = -91.51%