-97.49% is the change from 677 to 17
Calculation steps:
[( 17 - 677 ) ÷ 677] x 100 = -97.49%
Formula
Percentage change = [(17 - 677) / 677] x 100
Subtract the new number by the original number
17 - 677 = -660
-660 ÷ 677 = -0.9748892171344166
-0.9748892171344166 x 100 = -97.49%