-98.66% is the change from 522 to 7
Calculation steps:
[( 7 - 522 ) ÷ 522] x 100 = -98.66%
Formula
Percentage change = [(7 - 522) / 522] x 100
Subtract the new number by the original number
7 - 522 = -515
-515 ÷ 522 = -0.9865900383141762
-0.9865900383141762 x 100 = -98.66%