-77.55% is the change from 637 to 143
Calculation steps:
[( 143 - 637 ) ÷ 637] x 100 = -77.55%
Formula
Percentage change = [(143 - 637) / 637] x 100
Subtract the new number by the original number
143 - 637 = -494
-494 ÷ 637 = -0.7755102040816326
-0.7755102040816326 x 100 = -77.55%