-56.75% is the change from 918 to 397
Calculation steps:
[( 397 - 918 ) ÷ 918] x 100 = -56.75%
Formula
Percentage change = [(397 - 918) / 918] x 100
Subtract the new number by the original number
397 - 918 = -521
-521 ÷ 918 = -0.5675381263616558
-0.5675381263616558 x 100 = -56.75%