50% is the change from 380 to 570
Calculation steps:
[( 570 - 380 ) ÷ 380] x 100 = 50%
Formula
Percentage change = [(570 - 380) / 380] x 100
Subtract the new number by the original number
570 - 380 = 190
190 ÷ 380 = 0.5
0.5 x 100 = 50%
Example