1121.25% is the change from 80 to 977
Calculation steps:
[( 977 - 80 ) ÷ 80] x 100 = 1121.25%
Formula
Percentage change = [(977 - 80) / 80] x 100
Subtract the new number by the original number
977 - 80 = 897
897 ÷ 80 = 11.2125
11.2125 x 100 = 1121.25%