-74.63% is the change from 674 to 171
Calculation steps:
[( 171 - 674 ) ÷ 674] x 100 = -74.63%
Formula
Percentage change = [(171 - 674) / 674] x 100
Subtract the new number by the original number
171 - 674 = -503
-503 ÷ 674 = -0.7462908011869436
-0.7462908011869436 x 100 = -74.63%