-35.5% is the change from 800 to 516
Calculation steps:
[( 516 - 800 ) ÷ 800] x 100 = -35.5%
Formula
Percentage change = [(516 - 800) / 800] x 100
Subtract the new number by the original number
516 - 800 = -284
-284 ÷ 800 = -0.355
-0.355 x 100 = -35.5%