-18.52% is the change from 648 to 528
Calculation steps:
[( 528 - 648 ) ÷ 648] x 100 = -18.52%
Formula
Percentage change = [(528 - 648) / 648] x 100
Subtract the new number by the original number
528 - 648 = -120
-120 ÷ 648 = -0.18518518518518517
-0.18518518518518517 x 100 = -18.52%