83.09% is the change from 136 to 249
Calculation steps:
[( 249 - 136 ) ÷ 136] x 100 = 83.09%
Formula
Percentage change = [(249 - 136) / 136] x 100
Subtract the new number by the original number
249 - 136 = 113
113 ÷ 136 = 0.8308823529411765
0.8308823529411765 x 100 = 83.09%