6.27% is the change from 670 to 712
Calculation steps:
[( 712 - 670 ) ÷ 670] x 100 = 6.27%
Formula
Percentage change = [(712 - 670) / 670] x 100
Subtract the new number by the original number
712 - 670 = 42
42 ÷ 670 = 0.0626865671641791
0.0626865671641791 x 100 = 6.27%