-73.63% is the change from 637 to 168
Calculation steps:
[( 168 - 637 ) ÷ 637] x 100 = -73.63%
Formula
Percentage change = [(168 - 637) / 637] x 100
Subtract the new number by the original number
168 - 637 = -469
-469 ÷ 637 = -0.7362637362637363
-0.7362637362637363 x 100 = -73.63%