50.89% is the change from 338 to 510
Calculation steps:
[( 510 - 338 ) ÷ 338] x 100 = 50.89%
Formula
Percentage change = [(510 - 338) / 338] x 100
Subtract the new number by the original number
510 - 338 = 172
172 ÷ 338 = 0.5088757396449705
0.5088757396449705 x 100 = 50.89%