63.55% is the change from 310 to 507
Calculation steps:
[( 507 - 310 ) ÷ 310] x 100 = 63.55%
Formula
Percentage change = [(507 - 310) / 310] x 100
Subtract the new number by the original number
507 - 310 = 197
197 ÷ 310 = 0.635483870967742
0.635483870967742 x 100 = 63.55%