-82.41% is the change from 307 to 54
Calculation steps:
[( 54 - 307 ) ÷ 307] x 100 = -82.41%
Formula
Percentage change = [(54 - 307) / 307] x 100
Subtract the new number by the original number
54 - 307 = -253
-253 ÷ 307 = -0.8241042345276873
-0.8241042345276873 x 100 = -82.41%