79.77% is the change from 351 to 631
Calculation steps:
[( 631 - 351 ) ÷ 351] x 100 = 79.77%
Formula
Percentage change = [(631 - 351) / 351] x 100
Subtract the new number by the original number
631 - 351 = 280
280 ÷ 351 = 0.7977207977207977
0.7977207977207977 x 100 = 79.77%