-57.78% is the change from 919 to 388
Calculation steps:
[( 388 - 919 ) ÷ 919] x 100 = -57.78%
Formula
Percentage change = [(388 - 919) / 919] x 100
Subtract the new number by the original number
388 - 919 = -531
-531 ÷ 919 = -0.5778019586507073
-0.5778019586507073 x 100 = -57.78%