-15.03% is the change from 612 to 520
Calculation steps:
[( 520 - 612 ) ÷ 612] x 100 = -15.03%
Formula
Percentage change = [(520 - 612) / 612] x 100
Subtract the new number by the original number
520 - 612 = -92
-92 ÷ 612 = -0.1503267973856209
-0.1503267973856209 x 100 = -15.03%