-84.1% is the change from 522 to 83
Calculation steps:
[( 83 - 522 ) ÷ 522] x 100 = -84.1%
Formula
Percentage change = [(83 - 522) / 522] x 100
Subtract the new number by the original number
83 - 522 = -439
-439 ÷ 522 = -0.8409961685823755
-0.8409961685823755 x 100 = -84.1%