81.08% is the change from 370 to 670
Calculation steps:
[( 670 - 370 ) ÷ 370] x 100 = 81.08%
Formula
Percentage change = [(670 - 370) / 370] x 100
Subtract the new number by the original number
670 - 370 = 300
300 ÷ 370 = 0.8108108108108109
0.8108108108108109 x 100 = 81.08%