59.6% is the change from 99 to 158
Calculation steps:
[( 158 - 99 ) ÷ 99] x 100 = 59.6%
Formula
Percentage change = [(158 - 99) / 99] x 100
Subtract the new number by the original number
158 - 99 = 59
59 ÷ 99 = 0.5959595959595959
0.5959595959595959 x 100 = 59.6%