-77.3% is the change from 630 to 143
Calculation steps:
[( 143 - 630 ) ÷ 630] x 100 = -77.3%
Formula
Percentage change = [(143 - 630) / 630] x 100
Subtract the new number by the original number
143 - 630 = -487
-487 ÷ 630 = -0.773015873015873
-0.773015873015873 x 100 = -77.3%