-99.7% is the change from 674 to 2
Calculation steps:
[( 2 - 674 ) ÷ 674] x 100 = -99.7%
Formula
Percentage change = [(2 - 674) / 674] x 100
Subtract the new number by the original number
2 - 674 = -672
-672 ÷ 674 = -0.9970326409495549
-0.9970326409495549 x 100 = -99.7%