84.16% is the change from 221 to 407
Calculation steps:
[( 407 - 221 ) ÷ 221] x 100 = 84.16%
Formula
Percentage change = [(407 - 221) / 221] x 100
Subtract the new number by the original number
407 - 221 = 186
186 ÷ 221 = 0.8416289592760181
0.8416289592760181 x 100 = 84.16%