-54.49% is the change from 512 to 233
Calculation steps:
[( 233 - 512 ) ÷ 512] x 100 = -54.49%
Formula
Percentage change = [(233 - 512) / 512] x 100
Subtract the new number by the original number
233 - 512 = -279
-279 ÷ 512 = -0.544921875
-0.544921875 x 100 = -54.49%