-78.66% is the change from 670 to 143
Calculation steps:
[( 143 - 670 ) ÷ 670] x 100 = -78.66%
Formula
Percentage change = [(143 - 670) / 670] x 100
Subtract the new number by the original number
143 - 670 = -527
-527 ÷ 670 = -0.7865671641791044
-0.7865671641791044 x 100 = -78.66%