-90.7% is the change from 527 to 49
Calculation steps:
[( 49 - 527 ) ÷ 527] x 100 = -90.7%
Formula
Percentage change = [(49 - 527) / 527] x 100
Subtract the new number by the original number
49 - 527 = -478
-478 ÷ 527 = -0.9070208728652751
-0.9070208728652751 x 100 = -90.7%