49.85% is the change from 664 to 995
Calculation steps:
[( 995 - 664 ) ÷ 664] x 100 = 49.85%
Formula
Percentage change = [(995 - 664) / 664] x 100
Subtract the new number by the original number
995 - 664 = 331
331 ÷ 664 = 0.49849397590361444
0.49849397590361444 x 100 = 49.85%