-83.4% is the change from 530 to 88
Calculation steps:
[( 88 - 530 ) ÷ 530] x 100 = -83.4%
Formula
Percentage change = [(88 - 530) / 530] x 100
Subtract the new number by the original number
88 - 530 = -442
-442 ÷ 530 = -0.8339622641509434
-0.8339622641509434 x 100 = -83.4%