250% is the change from 148 to 518
Calculation steps:
[( 518 - 148 ) ÷ 148] x 100 = 250%
Formula
Percentage change = [(518 - 148) / 148] x 100
Subtract the new number by the original number
518 - 148 = 370
370 ÷ 148 = 2.5
2.5 x 100 = 250%
Example