-68.17% is the change from 487 to 155
Calculation steps:
[( 155 - 487 ) ÷ 487] x 100 = -68.17%
Formula
Percentage change = [(155 - 487) / 487] x 100
Subtract the new number by the original number
155 - 487 = -332
-332 ÷ 487 = -0.6817248459958932
-0.6817248459958932 x 100 = -68.17%