-69.61% is the change from 487 to 148
Calculation steps:
[( 148 - 487 ) ÷ 487] x 100 = -69.61%
Formula
Percentage change = [(148 - 487) / 487] x 100
Subtract the new number by the original number
148 - 487 = -339
-339 ÷ 487 = -0.6960985626283368
-0.6960985626283368 x 100 = -69.61%