-71.72% is the change from 488 to 138
Calculation steps:
[( 138 - 488 ) ÷ 488] x 100 = -71.72%
Formula
Percentage change = [(138 - 488) / 488] x 100
Subtract the new number by the original number
138 - 488 = -350
-350 ÷ 488 = -0.7172131147540983
-0.7172131147540983 x 100 = -71.72%