1097.5% is the change from 80 to 958
Calculation steps:
[( 958 - 80 ) ÷ 80] x 100 = 1097.5%
Formula
Percentage change = [(958 - 80) / 80] x 100
Subtract the new number by the original number
958 - 80 = 878
878 ÷ 80 = 10.975
10.975 x 100 = 1097.5%
Example