-74.63% is the change from 678 to 172
Calculation steps:
[( 172 - 678 ) ÷ 678] x 100 = -74.63%
Formula
Percentage change = [(172 - 678) / 678] x 100
Subtract the new number by the original number
172 - 678 = -506
-506 ÷ 678 = -0.7463126843657817
-0.7463126843657817 x 100 = -74.63%