50.46% is the change from 646 to 972
Calculation steps:
[( 972 - 646 ) ÷ 646] x 100 = 50.46%
Formula
Percentage change = [(972 - 646) / 646] x 100
Subtract the new number by the original number
972 - 646 = 326
326 ÷ 646 = 0.5046439628482973
0.5046439628482973 x 100 = 50.46%