-65.38% is the change from 800 to 277
Calculation steps:
[( 277 - 800 ) ÷ 800] x 100 = -65.38%
Formula
Percentage change = [(277 - 800) / 800] x 100
Subtract the new number by the original number
277 - 800 = -523
-523 ÷ 800 = -0.65375
-0.65375 x 100 = -65.38%