-77.35% is the change from 437 to 99
Calculation steps:
[( 99 - 437 ) ÷ 437] x 100 = -77.35%
Formula
Percentage change = [(99 - 437) / 437] x 100
Subtract the new number by the original number
99 - 437 = -338
-338 ÷ 437 = -0.7734553775743707
-0.7734553775743707 x 100 = -77.35%