-13.73% is the change from 612 to 528
Calculation steps:
[( 528 - 612 ) ÷ 612] x 100 = -13.73%
Formula
Percentage change = [(528 - 612) / 612] x 100
Subtract the new number by the original number
528 - 612 = -84
-84 ÷ 612 = -0.13725490196078433
-0.13725490196078433 x 100 = -13.73%