150% is the change from 388 to 970
Calculation steps:
[( 970 - 388 ) ÷ 388] x 100 = 150%
Formula
Percentage change = [(970 - 388) / 388] x 100
Subtract the new number by the original number
970 - 388 = 582
582 ÷ 388 = 1.5
1.5 x 100 = 150%
Example