-92.65% is the change from 680 to 50
Calculation steps:
[( 50 - 680 ) ÷ 680] x 100 = -92.65%
Formula
Percentage change = [(50 - 680) / 680] x 100
Subtract the new number by the original number
50 - 680 = -630
-630 ÷ 680 = -0.9264705882352942
-0.9264705882352942 x 100 = -92.65%