-92.87% is the change from 645 to 46
Calculation steps:
[( 46 - 645 ) ÷ 645] x 100 = -92.87%
Formula
Percentage change = [(46 - 645) / 645] x 100
Subtract the new number by the original number
46 - 645 = -599
-599 ÷ 645 = -0.9286821705426357
-0.9286821705426357 x 100 = -92.87%