-73.94% is the change from 307 to 80
Calculation steps:
[( 80 - 307 ) ÷ 307] x 100 = -73.94%
Formula
Percentage change = [(80 - 307) / 307] x 100
Subtract the new number by the original number
80 - 307 = -227
-227 ÷ 307 = -0.739413680781759
-0.739413680781759 x 100 = -73.94%