-77.21% is the change from 351 to 80
Calculation steps:
[( 80 - 351 ) ÷ 351] x 100 = -77.21%
Formula
Percentage change = [(80 - 351) / 351] x 100
Subtract the new number by the original number
80 - 351 = -271
-271 ÷ 351 = -0.7720797720797721
-0.7720797720797721 x 100 = -77.21%