20.36% is the change from 221 to 266
Calculation steps:
[( 266 - 221 ) ÷ 221] x 100 = 20.36%
Formula
Percentage change = [(266 - 221) / 221] x 100
Subtract the new number by the original number
266 - 221 = 45
45 ÷ 221 = 0.20361990950226244
0.20361990950226244 x 100 = 20.36%