73.68% is the change from 380 to 660
Calculation steps:
[( 660 - 380 ) ÷ 380] x 100 = 73.68%
Formula
Percentage change = [(660 - 380) / 380] x 100
Subtract the new number by the original number
660 - 380 = 280
280 ÷ 380 = 0.7368421052631579
0.7368421052631579 x 100 = 73.68%