-84.46% is the change from 534 to 83
Calculation steps:
[( 83 - 534 ) ÷ 534] x 100 = -84.46%
Formula
Percentage change = [(83 - 534) / 534] x 100
Subtract the new number by the original number
83 - 534 = -451
-451 ÷ 534 = -0.8445692883895131
-0.8445692883895131 x 100 = -84.46%