123.36% is the change from 137 to 306
Calculation steps:
[( 306 - 137 ) ÷ 137] x 100 = 123.36%
Formula
Percentage change = [(306 - 137) / 137] x 100
Subtract the new number by the original number
306 - 137 = 169
169 ÷ 137 = 1.2335766423357664
1.2335766423357664 x 100 = 123.36%