49.32% is the change from 148 to 221
Calculation steps:
[( 221 - 148 ) ÷ 148] x 100 = 49.32%
Formula
Percentage change = [(221 - 148) / 148] x 100
Subtract the new number by the original number
221 - 148 = 73
73 ÷ 148 = 0.49324324324324326
0.49324324324324326 x 100 = 49.32%