-70.81% is the change from 620 to 181
Calculation steps:
[( 181 - 620 ) ÷ 620] x 100 = -70.81%
Formula
Percentage change = [(181 - 620) / 620] x 100
Subtract the new number by the original number
181 - 620 = -439
-439 ÷ 620 = -0.7080645161290322
-0.7080645161290322 x 100 = -70.81%