1300% is the change from 37 to 518
Calculation steps:
[( 518 - 37 ) ÷ 37] x 100 = 1300%
Formula
Percentage change = [(518 - 37) / 37] x 100
Subtract the new number by the original number
518 - 37 = 481
481 ÷ 37 = 13
13 x 100 = 1300%
Example