1087.14% is the change from 70 to 831
Calculation steps:
[( 831 - 70 ) ÷ 70] x 100 = 1087.14%
Formula
Percentage change = [(831 - 70) / 70] x 100
Subtract the new number by the original number
831 - 70 = 761
761 ÷ 70 = 10.871428571428572
10.871428571428572 x 100 = 1087.14%