-74.07% is the change from 644 to 167
Calculation steps:
[( 167 - 644 ) ÷ 644] x 100 = -74.07%
Formula
Percentage change = [(167 - 644) / 644] x 100
Subtract the new number by the original number
167 - 644 = -477
-477 ÷ 644 = -0.7406832298136646
-0.7406832298136646 x 100 = -74.07%