-89.62% is the change from 530 to 55
Calculation steps:
[( 55 - 530 ) ÷ 530] x 100 = -89.62%
Formula
Percentage change = [(55 - 530) / 530] x 100
Subtract the new number by the original number
55 - 530 = -475
-475 ÷ 530 = -0.8962264150943396
-0.8962264150943396 x 100 = -89.62%