-50.5% is the change from 606 to 300
Calculation steps:
[( 300 - 606 ) ÷ 606] x 100 = -50.5%
Formula
Percentage change = [(300 - 606) / 606] x 100
Subtract the new number by the original number
300 - 606 = -306
-306 ÷ 606 = -0.504950495049505
-0.504950495049505 x 100 = -50.5%