-91.7% is the change from 855 to 71
Calculation steps:
[( 71 - 855 ) ÷ 855] x 100 = -91.7%
Formula
Percentage change = [(71 - 855) / 855] x 100
Subtract the new number by the original number
71 - 855 = -784
-784 ÷ 855 = -0.9169590643274854
-0.9169590643274854 x 100 = -91.7%