-71.18% is the change from 642 to 185
Calculation steps:
[( 185 - 642 ) ÷ 642] x 100 = -71.18%
Formula
Percentage change = [(185 - 642) / 642] x 100
Subtract the new number by the original number
185 - 642 = -457
-457 ÷ 642 = -0.7118380062305296
-0.7118380062305296 x 100 = -71.18%