149.75% is the change from 203 to 507
Calculation steps:
[( 507 - 203 ) ÷ 203] x 100 = 149.75%
Formula
Percentage change = [(507 - 203) / 203] x 100
Subtract the new number by the original number
507 - 203 = 304
304 ÷ 203 = 1.4975369458128078
1.4975369458128078 x 100 = 149.75%