-79.06% is the change from 487 to 102
Calculation steps:
[( 102 - 487 ) ÷ 487] x 100 = -79.06%
Formula
Percentage change = [(102 - 487) / 487] x 100
Subtract the new number by the original number
102 - 487 = -385
-385 ÷ 487 = -0.7905544147843943
-0.7905544147843943 x 100 = -79.06%