51.7% is the change from 646 to 980
Calculation steps:
[( 980 - 646 ) ÷ 646] x 100 = 51.7%
Formula
Percentage change = [(980 - 646) / 646] x 100
Subtract the new number by the original number
980 - 646 = 334
334 ÷ 646 = 0.5170278637770898
0.5170278637770898 x 100 = 51.7%