-73.02% is the change from 945 to 255
Calculation steps:
[( 255 - 945 ) ÷ 945] x 100 = -73.02%
Formula
Percentage change = [(255 - 945) / 945] x 100
Subtract the new number by the original number
255 - 945 = -690
-690 ÷ 945 = -0.7301587301587301
-0.7301587301587301 x 100 = -73.02%