-90.58% is the change from 902 to 85
Calculation steps:
[( 85 - 902 ) ÷ 902] x 100 = -90.58%
Formula
Percentage change = [(85 - 902) / 902] x 100
Subtract the new number by the original number
85 - 902 = -817
-817 ÷ 902 = -0.9057649667405765
-0.9057649667405765 x 100 = -90.58%