38.75% is the change from 671 to 931
Calculation steps:
[( 931 - 671 ) ÷ 671] x 100 = 38.75%
Formula
Percentage change = [(931 - 671) / 671] x 100
Subtract the new number by the original number
931 - 671 = 260
260 ÷ 671 = 0.38748137108792846
0.38748137108792846 x 100 = 38.75%