-73.86% is the change from 528 to 138
Calculation steps:
[( 138 - 528 ) ÷ 528] x 100 = -73.86%
Formula
Percentage change = [(138 - 528) / 528] x 100
Subtract the new number by the original number
138 - 528 = -390
-390 ÷ 528 = -0.7386363636363636
-0.7386363636363636 x 100 = -73.86%