-9.48% is the change from 538 to 487
Calculation steps:
[( 487 - 538 ) ÷ 538] x 100 = -9.48%
Formula
Percentage change = [(487 - 538) / 538] x 100
Subtract the new number by the original number
487 - 538 = -51
-51 ÷ 538 = -0.09479553903345725
-0.09479553903345725 x 100 = -9.48%