-87.36% is the change from 522 to 66
Calculation steps:
[( 66 - 522 ) ÷ 522] x 100 = -87.36%
Formula
Percentage change = [(66 - 522) / 522] x 100
Subtract the new number by the original number
66 - 522 = -456
-456 ÷ 522 = -0.8735632183908046
-0.8735632183908046 x 100 = -87.36%