-24.73% is the change from 647 to 487
Calculation steps:
[( 487 - 647 ) ÷ 647] x 100 = -24.73%
Formula
Percentage change = [(487 - 647) / 647] x 100
Subtract the new number by the original number
487 - 647 = -160
-160 ÷ 647 = -0.2472952086553323
-0.2472952086553323 x 100 = -24.73%