-63.28% is the change from 512 to 188
Calculation steps:
[( 188 - 512 ) ÷ 512] x 100 = -63.28%
Formula
Percentage change = [(188 - 512) / 512] x 100
Subtract the new number by the original number
188 - 512 = -324
-324 ÷ 512 = -0.6328125
-0.6328125 x 100 = -63.28%