12.5% is the change from 216 to 243
Calculation steps:
[( 243 - 216 ) ÷ 216] x 100 = 12.5%
Formula
Percentage change = [(243 - 216) / 216] x 100
Subtract the new number by the original number
243 - 216 = 27
27 ÷ 216 = 0.125
0.125 x 100 = 12.5%
Example