770% is the change from 10 to 87
Calculation steps:
[( 87 - 10 ) ÷ 10] x 100 = 770%
Formula
Percentage change = [(87 - 10) / 10] x 100
Subtract the new number by the original number
87 - 10 = 77
77 ÷ 10 = 7.7
7.7 x 100 = 770%
Example