-58.2% is the change from 512 to 214
Calculation steps:
[( 214 - 512 ) ÷ 512] x 100 = -58.2%
Formula
Percentage change = [(214 - 512) / 512] x 100
Subtract the new number by the original number
214 - 512 = -298
-298 ÷ 512 = -0.58203125
-0.58203125 x 100 = -58.2%