-47.93% is the change from 605 to 315
Calculation steps:
[( 315 - 605 ) ÷ 605] x 100 = -47.93%
Formula
Percentage change = [(315 - 605) / 605] x 100
Subtract the new number by the original number
315 - 605 = -290
-290 ÷ 605 = -0.4793388429752066
-0.4793388429752066 x 100 = -47.93%