-73.1% is the change from 487 to 131
Calculation steps:
[( 131 - 487 ) ÷ 487] x 100 = -73.1%
Formula
Percentage change = [(131 - 487) / 487] x 100
Subtract the new number by the original number
131 - 487 = -356
-356 ÷ 487 = -0.731006160164271
-0.731006160164271 x 100 = -73.1%