15.58% is the change from 77 to 89
Calculation steps:
[( 89 - 77 ) ÷ 77] x 100 = 15.58%
Formula
Percentage change = [(89 - 77) / 77] x 100
Subtract the new number by the original number
89 - 77 = 12
12 ÷ 77 = 0.15584415584415584
0.15584415584415584 x 100 = 15.58%