-97.3% is the change from 629 to 17
Calculation steps:
[( 17 - 629 ) ÷ 629] x 100 = -97.3%
Formula
Percentage change = [(17 - 629) / 629] x 100
Subtract the new number by the original number
17 - 629 = -612
-612 ÷ 629 = -0.972972972972973
-0.972972972972973 x 100 = -97.3%