-93.92% is the change from 691 to 42
Calculation steps:
[( 42 - 691 ) ÷ 691] x 100 = -93.92%
Formula
Percentage change = [(42 - 691) / 691] x 100
Subtract the new number by the original number
42 - 691 = -649
-649 ÷ 691 = -0.9392185238784371
-0.9392185238784371 x 100 = -93.92%