77.83% is the change from 221 to 393
Calculation steps:
[( 393 - 221 ) ÷ 221] x 100 = 77.83%
Formula
Percentage change = [(393 - 221) / 221] x 100
Subtract the new number by the original number
393 - 221 = 172
172 ÷ 221 = 0.7782805429864253
0.7782805429864253 x 100 = 77.83%