-71.47% is the change from 645 to 184
Calculation steps:
[( 184 - 645 ) ÷ 645] x 100 = -71.47%
Formula
Percentage change = [(184 - 645) / 645] x 100
Subtract the new number by the original number
184 - 645 = -461
-461 ÷ 645 = -0.7147286821705426
-0.7147286821705426 x 100 = -71.47%