9.99% is the change from 791 to 870
Calculation steps:
[( 870 - 791 ) ÷ 791] x 100 = 9.99%
Formula
Percentage change = [(870 - 791) / 791] x 100
Subtract the new number by the original number
870 - 791 = 79
79 ÷ 791 = 0.09987357774968394
0.09987357774968394 x 100 = 9.99%