-92.35% is the change from 667 to 51
Calculation steps:
[( 51 - 667 ) ÷ 667] x 100 = -92.35%
Formula
Percentage change = [(51 - 667) / 667] x 100
Subtract the new number by the original number
51 - 667 = -616
-616 ÷ 667 = -0.9235382308845578
-0.9235382308845578 x 100 = -92.35%