-45.5% is the change from 945 to 515
Calculation steps:
[( 515 - 945 ) ÷ 945] x 100 = -45.5%
Formula
Percentage change = [(515 - 945) / 945] x 100
Subtract the new number by the original number
515 - 945 = -430
-430 ÷ 945 = -0.455026455026455
-0.455026455026455 x 100 = -45.5%