128.51% is the change from 221 to 505
Calculation steps:
[( 505 - 221 ) ÷ 221] x 100 = 128.51%
Formula
Percentage change = [(505 - 221) / 221] x 100
Subtract the new number by the original number
505 - 221 = 284
284 ÷ 221 = 1.2850678733031675
1.2850678733031675 x 100 = 128.51%