-77.4% is the change from 354 to 80
Calculation steps:
[( 80 - 354 ) ÷ 354] x 100 = -77.4%
Formula
Percentage change = [(80 - 354) / 354] x 100
Subtract the new number by the original number
80 - 354 = -274
-274 ÷ 354 = -0.7740112994350282
-0.7740112994350282 x 100 = -77.4%