-90.76% is the change from 920 to 85
Calculation steps:
[( 85 - 920 ) ÷ 920] x 100 = -90.76%
Formula
Percentage change = [(85 - 920) / 920] x 100
Subtract the new number by the original number
85 - 920 = -835
-835 ÷ 920 = -0.907608695652174
-0.907608695652174 x 100 = -90.76%