-90.63% is the change from 523 to 49
Calculation steps:
[( 49 - 523 ) ÷ 523] x 100 = -90.63%
Formula
Percentage change = [(49 - 523) / 523] x 100
Subtract the new number by the original number
49 - 523 = -474
-474 ÷ 523 = -0.9063097514340345
-0.9063097514340345 x 100 = -90.63%