50.69% is the change from 507 to 764
Calculation steps:
[( 764 - 507 ) ÷ 507] x 100 = 50.69%
Formula
Percentage change = [(764 - 507) / 507] x 100
Subtract the new number by the original number
764 - 507 = 257
257 ÷ 507 = 0.5069033530571992
0.5069033530571992 x 100 = 50.69%