-32.75% is the change from 800 to 538
Calculation steps:
[( 538 - 800 ) ÷ 800] x 100 = -32.75%
Formula
Percentage change = [(538 - 800) / 800] x 100
Subtract the new number by the original number
538 - 800 = -262
-262 ÷ 800 = -0.3275
-0.3275 x 100 = -32.75%