98.64% is the change from 221 to 439
Calculation steps:
[( 439 - 221 ) ÷ 221] x 100 = 98.64%
Formula
Percentage change = [(439 - 221) / 221] x 100
Subtract the new number by the original number
439 - 221 = 218
218 ÷ 221 = 0.9864253393665159
0.9864253393665159 x 100 = 98.64%