976.92% is the change from 91 to 980
Calculation steps:
[( 980 - 91 ) ÷ 91] x 100 = 976.92%
Formula
Percentage change = [(980 - 91) / 91] x 100
Subtract the new number by the original number
980 - 91 = 889
889 ÷ 91 = 9.76923076923077
9.76923076923077 x 100 = 976.92%