-23.62% is the change from 834 to 637
Calculation steps:
[( 637 - 834 ) ÷ 834] x 100 = -23.62%
Formula
Percentage change = [(637 - 834) / 834] x 100
Subtract the new number by the original number
637 - 834 = -197
-197 ÷ 834 = -0.23621103117505995
-0.23621103117505995 x 100 = -23.62%