-26.79% is the change from 530 to 388
Calculation steps:
[( 388 - 530 ) ÷ 530] x 100 = -26.79%
Formula
Percentage change = [(388 - 530) / 530] x 100
Subtract the new number by the original number
388 - 530 = -142
-142 ÷ 530 = -0.2679245283018868
-0.2679245283018868 x 100 = -26.79%