-69.88% is the change from 488 to 147
Calculation steps:
[( 147 - 488 ) ÷ 488] x 100 = -69.88%
Formula
Percentage change = [(147 - 488) / 488] x 100
Subtract the new number by the original number
147 - 488 = -341
-341 ÷ 488 = -0.6987704918032787
-0.6987704918032787 x 100 = -69.88%