-1.38% is the change from 507 to 500
Calculation steps:
[( 500 - 507 ) ÷ 507] x 100 = -1.38%
Formula
Percentage change = [(500 - 507) / 507] x 100
Subtract the new number by the original number
500 - 507 = -7
-7 ÷ 507 = -0.013806706114398421
-0.013806706114398421 x 100 = -1.38%