-61.52% is the change from 512 to 197
Calculation steps:
[( 197 - 512 ) ÷ 512] x 100 = -61.52%
Formula
Percentage change = [(197 - 512) / 512] x 100
Subtract the new number by the original number
197 - 512 = -315
-315 ÷ 512 = -0.615234375
-0.615234375 x 100 = -61.52%