-16.12% is the change from 304 to 255
Calculation steps:
[( 255 - 304 ) ÷ 304] x 100 = -16.12%
Formula
Percentage change = [(255 - 304) / 304] x 100
Subtract the new number by the original number
255 - 304 = -49
-49 ÷ 304 = -0.1611842105263158
-0.1611842105263158 x 100 = -16.12%