-42.33% is the change from 945 to 545
Calculation steps:
[( 545 - 945 ) ÷ 945] x 100 = -42.33%
Formula
Percentage change = [(545 - 945) / 945] x 100
Subtract the new number by the original number
545 - 945 = -400
-400 ÷ 945 = -0.42328042328042326
-0.42328042328042326 x 100 = -42.33%