-81.91% is the change from 304 to 55
Calculation steps:
[( 55 - 304 ) ÷ 304] x 100 = -81.91%
Formula
Percentage change = [(55 - 304) / 304] x 100
Subtract the new number by the original number
55 - 304 = -249
-249 ÷ 304 = -0.819078947368421
-0.819078947368421 x 100 = -81.91%