-61.63% is the change from 800 to 307
Calculation steps:
[( 307 - 800 ) ÷ 800] x 100 = -61.63%
Formula
Percentage change = [(307 - 800) / 800] x 100
Subtract the new number by the original number
307 - 800 = -493
-493 ÷ 800 = -0.61625
-0.61625 x 100 = -61.63%