-81.04% is the change from 538 to 102
Calculation steps:
[( 102 - 538 ) ÷ 538] x 100 = -81.04%
Formula
Percentage change = [(102 - 538) / 538] x 100
Subtract the new number by the original number
102 - 538 = -436
-436 ÷ 538 = -0.8104089219330854
-0.8104089219330854 x 100 = -81.04%