-3.65% is the change from 548 to 528
Calculation steps:
[( 528 - 548 ) ÷ 548] x 100 = -3.65%
Formula
Percentage change = [(528 - 548) / 548] x 100
Subtract the new number by the original number
528 - 548 = -20
-20 ÷ 548 = -0.0364963503649635
-0.0364963503649635 x 100 = -3.65%