11.63% is the change from 215 to 240
Calculation steps:
[( 240 - 215 ) ÷ 215] x 100 = 11.63%
Formula
Percentage change = [(240 - 215) / 215] x 100
Subtract the new number by the original number
240 - 215 = 25
25 ÷ 215 = 0.11627906976744186
0.11627906976744186 x 100 = 11.63%