-93.36% is the change from 633 to 42
Calculation steps:
[( 42 - 633 ) ÷ 633] x 100 = -93.36%
Formula
Percentage change = [(42 - 633) / 633] x 100
Subtract the new number by the original number
42 - 633 = -591
-591 ÷ 633 = -0.933649289099526
-0.933649289099526 x 100 = -93.36%