-74.85% is the change from 684 to 172
Calculation steps:
[( 172 - 684 ) ÷ 684] x 100 = -74.85%
Formula
Percentage change = [(172 - 684) / 684] x 100
Subtract the new number by the original number
172 - 684 = -512
-512 ÷ 684 = -0.7485380116959064
-0.7485380116959064 x 100 = -74.85%