-5.66% is the change from 530 to 500
Calculation steps:
[( 500 - 530 ) ÷ 530] x 100 = -5.66%
Formula
Percentage change = [(500 - 530) / 530] x 100
Subtract the new number by the original number
500 - 530 = -30
-30 ÷ 530 = -0.05660377358490566
-0.05660377358490566 x 100 = -5.66%