-38.78% is the change from 490 to 300
Calculation steps:
[( 300 - 490 ) ÷ 490] x 100 = -38.78%
Formula
Percentage change = [(300 - 490) / 490] x 100
Subtract the new number by the original number
300 - 490 = -190
-190 ÷ 490 = -0.3877551020408163
-0.3877551020408163 x 100 = -38.78%