21.08% is the change from 223 to 270
Calculation steps:
[( 270 - 223 ) ÷ 223] x 100 = 21.08%
Formula
Percentage change = [(270 - 223) / 223] x 100
Subtract the new number by the original number
270 - 223 = 47
47 ÷ 223 = 0.21076233183856502
0.21076233183856502 x 100 = 21.08%