-48.94% is the change from 284 to 145
Calculation steps:
[( 145 - 284 ) ÷ 284] x 100 = -48.94%
Formula
Percentage change = [(145 - 284) / 284] x 100
Subtract the new number by the original number
145 - 284 = -139
-139 ÷ 284 = -0.4894366197183099
-0.4894366197183099 x 100 = -48.94%