-90.35% is the change from 508 to 49
Calculation steps:
[( 49 - 508 ) ÷ 508] x 100 = -90.35%
Formula
Percentage change = [(49 - 508) / 508] x 100
Subtract the new number by the original number
49 - 508 = -459
-459 ÷ 508 = -0.9035433070866141
-0.9035433070866141 x 100 = -90.35%