-87.01% is the change from 77 to 10
Calculation steps:
[( 10 - 77 ) ÷ 77] x 100 = -87.01%
Formula
Percentage change = [(10 - 77) / 77] x 100
Subtract the new number by the original number
10 - 77 = -67
-67 ÷ 77 = -0.8701298701298701
-0.8701298701298701 x 100 = -87.01%