15.35% is the change from 215 to 248
Calculation steps:
[( 248 - 215 ) ÷ 215] x 100 = 15.35%
Formula
Percentage change = [(248 - 215) / 215] x 100
Subtract the new number by the original number
248 - 215 = 33
33 ÷ 215 = 0.15348837209302327
0.15348837209302327 x 100 = 15.35%