-74.87% is the change from 390 to 98
Calculation steps:
[( 98 - 390 ) ÷ 390] x 100 = -74.87%
Formula
Percentage change = [(98 - 390) / 390] x 100
Subtract the new number by the original number
98 - 390 = -292
-292 ÷ 390 = -0.7487179487179487
-0.7487179487179487 x 100 = -74.87%