48.8% is the change from 664 to 988
Calculation steps:
[( 988 - 664 ) ÷ 664] x 100 = 48.8%
Formula
Percentage change = [(988 - 664) / 664] x 100
Subtract the new number by the original number
988 - 664 = 324
324 ÷ 664 = 0.4879518072289157
0.4879518072289157 x 100 = 48.8%