-70.33% is the change from 637 to 189
Calculation steps:
[( 189 - 637 ) ÷ 637] x 100 = -70.33%
Formula
Percentage change = [(189 - 637) / 637] x 100
Subtract the new number by the original number
189 - 637 = -448
-448 ÷ 637 = -0.7032967032967034
-0.7032967032967034 x 100 = -70.33%