-61.72% is the change from 512 to 196
Calculation steps:
[( 196 - 512 ) ÷ 512] x 100 = -61.72%
Formula
Percentage change = [(196 - 512) / 512] x 100
Subtract the new number by the original number
196 - 512 = -316
-316 ÷ 512 = -0.6171875
-0.6171875 x 100 = -61.72%