-41.02% is the change from 512 to 302
Calculation steps:
[( 302 - 512 ) ÷ 512] x 100 = -41.02%
Formula
Percentage change = [(302 - 512) / 512] x 100
Subtract the new number by the original number
302 - 512 = -210
-210 ÷ 512 = -0.41015625
-0.41015625 x 100 = -41.02%