-23.26% is the change from 688 to 528
Calculation steps:
[( 528 - 688 ) ÷ 688] x 100 = -23.26%
Formula
Percentage change = [(528 - 688) / 688] x 100
Subtract the new number by the original number
528 - 688 = -160
-160 ÷ 688 = -0.23255813953488372
-0.23255813953488372 x 100 = -23.26%