-88.98% is the change from 771 to 85
Calculation steps:
[( 85 - 771 ) ÷ 771] x 100 = -88.98%
Formula
Percentage change = [(85 - 771) / 771] x 100
Subtract the new number by the original number
85 - 771 = -686
-686 ÷ 771 = -0.8897535667963683
-0.8897535667963683 x 100 = -88.98%