61.89% is the change from 307 to 497
Calculation steps:
[( 497 - 307 ) ÷ 307] x 100 = 61.89%
Formula
Percentage change = [(497 - 307) / 307] x 100
Subtract the new number by the original number
497 - 307 = 190
190 ÷ 307 = 0.6188925081433225
0.6188925081433225 x 100 = 61.89%