12.57% is the change from 191 to 215
Calculation steps:
[( 215 - 191 ) ÷ 191] x 100 = 12.57%
Formula
Percentage change = [(215 - 191) / 191] x 100
Subtract the new number by the original number
215 - 191 = 24
24 ÷ 191 = 0.1256544502617801
0.1256544502617801 x 100 = 12.57%