-59.18% is the change from 512 to 209
Calculation steps:
[( 209 - 512 ) ÷ 512] x 100 = -59.18%
Formula
Percentage change = [(209 - 512) / 512] x 100
Subtract the new number by the original number
209 - 512 = -303
-303 ÷ 512 = -0.591796875
-0.591796875 x 100 = -59.18%