-84.9% is the change from 490 to 74
Calculation steps:
[( 74 - 490 ) ÷ 490] x 100 = -84.9%
Formula
Percentage change = [(74 - 490) / 490] x 100
Subtract the new number by the original number
74 - 490 = -416
-416 ÷ 490 = -0.8489795918367347
-0.8489795918367347 x 100 = -84.9%