-66.04% is the change from 530 to 180
Calculation steps:
[( 180 - 530 ) ÷ 530] x 100 = -66.04%
Formula
Percentage change = [(180 - 530) / 530] x 100
Subtract the new number by the original number
180 - 530 = -350
-350 ÷ 530 = -0.660377358490566
-0.660377358490566 x 100 = -66.04%