-17.65% is the change from 612 to 504
Calculation steps:
[( 504 - 612 ) ÷ 612] x 100 = -17.65%
Formula
Percentage change = [(504 - 612) / 612] x 100
Subtract the new number by the original number
504 - 612 = -108
-108 ÷ 612 = -0.17647058823529413
-0.17647058823529413 x 100 = -17.65%