1040% is the change from 80 to 912
Calculation steps:
[( 912 - 80 ) ÷ 80] x 100 = 1040%
Formula
Percentage change = [(912 - 80) / 80] x 100
Subtract the new number by the original number
912 - 80 = 832
832 ÷ 80 = 10.4
10.4 x 100 = 1040%
Example