689.29% is the change from 28 to 221
Calculation steps:
[( 221 - 28 ) ÷ 28] x 100 = 689.29%
Formula
Percentage change = [(221 - 28) / 28] x 100
Subtract the new number by the original number
221 - 28 = 193
193 ÷ 28 = 6.892857142857143
6.892857142857143 x 100 = 689.29%