-13.67% is the change from 512 to 442
Calculation steps:
[( 442 - 512 ) ÷ 512] x 100 = -13.67%
Formula
Percentage change = [(442 - 512) / 512] x 100
Subtract the new number by the original number
442 - 512 = -70
-70 ÷ 512 = -0.13671875
-0.13671875 x 100 = -13.67%