-84.08% is the change from 534 to 85
Calculation steps:
[( 85 - 534 ) ÷ 534] x 100 = -84.08%
Formula
Percentage change = [(85 - 534) / 534] x 100
Subtract the new number by the original number
85 - 534 = -449
-449 ÷ 534 = -0.8408239700374532
-0.8408239700374532 x 100 = -84.08%