-50.41% is the change from 605 to 300
Calculation steps:
[( 300 - 605 ) ÷ 605] x 100 = -50.41%
Formula
Percentage change = [(300 - 605) / 605] x 100
Subtract the new number by the original number
300 - 605 = -305
-305 ÷ 605 = -0.5041322314049587
-0.5041322314049587 x 100 = -50.41%