-90.57% is the change from 901 to 85
Calculation steps:
[( 85 - 901 ) ÷ 901] x 100 = -90.57%
Formula
Percentage change = [(85 - 901) / 901] x 100
Subtract the new number by the original number
85 - 901 = -816
-816 ÷ 901 = -0.9056603773584906
-0.9056603773584906 x 100 = -90.57%