1072.86% is the change from 70 to 821
Calculation steps:
[( 821 - 70 ) ÷ 70] x 100 = 1072.86%
Formula
Percentage change = [(821 - 70) / 70] x 100
Subtract the new number by the original number
821 - 70 = 751
751 ÷ 70 = 10.728571428571428
10.728571428571428 x 100 = 1072.86%