87.78% is the change from 221 to 415
Calculation steps:
[( 415 - 221 ) ÷ 221] x 100 = 87.78%
Formula
Percentage change = [(415 - 221) / 221] x 100
Subtract the new number by the original number
415 - 221 = 194
194 ÷ 221 = 0.8778280542986425
0.8778280542986425 x 100 = 87.78%