2662.5% is the change from 8 to 221
Calculation steps:
[( 221 - 8 ) ÷ 8] x 100 = 2662.5%
Formula
Percentage change = [(221 - 8) / 8] x 100
Subtract the new number by the original number
221 - 8 = 213
213 ÷ 8 = 26.625
26.625 x 100 = 2662.5%
Example