1580% is the change from 15 to 252
Calculation steps:
[( 252 - 15 ) ÷ 15] x 100 = 1580%
Formula
Percentage change = [(252 - 15) / 15] x 100
Subtract the new number by the original number
252 - 15 = 237
237 ÷ 15 = 15.8
15.8 x 100 = 1580%
Example