138.32% is the change from 214 to 510
Calculation steps:
[( 510 - 214 ) ÷ 214] x 100 = 138.32%
Formula
Percentage change = [(510 - 214) / 214] x 100
Subtract the new number by the original number
510 - 214 = 296
296 ÷ 214 = 1.3831775700934579
1.3831775700934579 x 100 = 138.32%