1353.33% is the change from 15 to 218
Calculation steps:
[( 218 - 15 ) ÷ 15] x 100 = 1353.33%
Formula
Percentage change = [(218 - 15) / 15] x 100
Subtract the new number by the original number
218 - 15 = 203
203 ÷ 15 = 13.533333333333333
13.533333333333333 x 100 = 1353.33%