-92.42% is the change from 673 to 51
Calculation steps:
[( 51 - 673 ) ÷ 673] x 100 = -92.42%
Formula
Percentage change = [(51 - 673) / 673] x 100
Subtract the new number by the original number
51 - 673 = -622
-622 ÷ 673 = -0.924219910846954
-0.924219910846954 x 100 = -92.42%