38.99% is the change from 159 to 221
Calculation steps:
[( 221 - 159 ) ÷ 159] x 100 = 38.99%
Formula
Percentage change = [(221 - 159) / 159] x 100
Subtract the new number by the original number
221 - 159 = 62
62 ÷ 159 = 0.389937106918239
0.389937106918239 x 100 = 38.99%