-57.52% is the change from 918 to 390
Calculation steps:
[( 390 - 918 ) ÷ 918] x 100 = -57.52%
Formula
Percentage change = [(390 - 918) / 918] x 100
Subtract the new number by the original number
390 - 918 = -528
-528 ÷ 918 = -0.5751633986928104
-0.5751633986928104 x 100 = -57.52%