20.47% is the change from 215 to 259
Calculation steps:
[( 259 - 215 ) ÷ 215] x 100 = 20.47%
Formula
Percentage change = [(259 - 215) / 215] x 100
Subtract the new number by the original number
259 - 215 = 44
44 ÷ 215 = 0.20465116279069767
0.20465116279069767 x 100 = 20.47%