-56.43% is the change from 918 to 400
Calculation steps:
[( 400 - 918 ) ÷ 918] x 100 = -56.43%
Formula
Percentage change = [(400 - 918) / 918] x 100
Subtract the new number by the original number
400 - 918 = -518
-518 ÷ 918 = -0.5642701525054467
-0.5642701525054467 x 100 = -56.43%