47.44% is the change from 215 to 317
Calculation steps:
[( 317 - 215 ) ÷ 215] x 100 = 47.44%
Formula
Percentage change = [(317 - 215) / 215] x 100
Subtract the new number by the original number
317 - 215 = 102
102 ÷ 215 = 0.4744186046511628
0.4744186046511628 x 100 = 47.44%