-22.46% is the change from 512 to 397
Calculation steps:
[( 397 - 512 ) ÷ 512] x 100 = -22.46%
Formula
Percentage change = [(397 - 512) / 512] x 100
Subtract the new number by the original number
397 - 512 = -115
-115 ÷ 512 = -0.224609375
-0.224609375 x 100 = -22.46%