242.08% is the change from 221 to 756
Calculation steps:
[( 756 - 221 ) ÷ 221] x 100 = 242.08%
Formula
Percentage change = [(756 - 221) / 221] x 100
Subtract the new number by the original number
756 - 221 = 535
535 ÷ 221 = 2.420814479638009
2.420814479638009 x 100 = 242.08%