-2.87% is the change from 522 to 507
Calculation steps:
[( 507 - 522 ) ÷ 522] x 100 = -2.87%
Formula
Percentage change = [(507 - 522) / 522] x 100
Subtract the new number by the original number
507 - 522 = -15
-15 ÷ 522 = -0.028735632183908046
-0.028735632183908046 x 100 = -2.87%