991.01% is the change from 89 to 971
Calculation steps:
[( 971 - 89 ) ÷ 89] x 100 = 991.01%
Formula
Percentage change = [(971 - 89) / 89] x 100
Subtract the new number by the original number
971 - 89 = 882
882 ÷ 89 = 9.910112359550562
9.910112359550562 x 100 = 991.01%