-71.76% is the change from 903 to 255
Calculation steps:
[( 255 - 903 ) ÷ 903] x 100 = -71.76%
Formula
Percentage change = [(255 - 903) / 903] x 100
Subtract the new number by the original number
255 - 903 = -648
-648 ÷ 903 = -0.717607973421927
-0.717607973421927 x 100 = -71.76%