870% is the change from 100 to 970
Calculation steps:
[( 970 - 100 ) ÷ 100] x 100 = 870%
Formula
Percentage change = [(970 - 100) / 100] x 100
Subtract the new number by the original number
970 - 100 = 870
870 ÷ 100 = 8.7
8.7 x 100 = 870%
Example