-23.36% is the change from 518 to 397
Calculation steps:
[( 397 - 518 ) ÷ 518] x 100 = -23.36%
Formula
Percentage change = [(397 - 518) / 518] x 100
Subtract the new number by the original number
397 - 518 = -121
-121 ÷ 518 = -0.2335907335907336
-0.2335907335907336 x 100 = -23.36%