45.74% is the change from 680 to 991
Calculation steps:
[( 991 - 680 ) ÷ 680] x 100 = 45.74%
Formula
Percentage change = [(991 - 680) / 680] x 100
Subtract the new number by the original number
991 - 680 = 311
311 ÷ 680 = 0.4573529411764706
0.4573529411764706 x 100 = 45.74%