62.3% is the change from 61 to 99
Calculation steps:
[( 99 - 61 ) ÷ 61] x 100 = 62.3%
Formula
Percentage change = [(99 - 61) / 61] x 100
Subtract the new number by the original number
99 - 61 = 38
38 ÷ 61 = 0.6229508196721312
0.6229508196721312 x 100 = 62.3%