121.4% is the change from 229 to 507
Calculation steps:
[( 507 - 229 ) ÷ 229] x 100 = 121.4%
Formula
Percentage change = [(507 - 229) / 229] x 100
Subtract the new number by the original number
507 - 229 = 278
278 ÷ 229 = 1.2139737991266375
1.2139737991266375 x 100 = 121.4%