35.35% is the change from 215 to 291
Calculation steps:
[( 291 - 215 ) ÷ 215] x 100 = 35.35%
Formula
Percentage change = [(291 - 215) / 215] x 100
Subtract the new number by the original number
291 - 215 = 76
76 ÷ 215 = 0.35348837209302325
0.35348837209302325 x 100 = 35.35%