-68.96% is the change from 670 to 208
Calculation steps:
[( 208 - 670 ) ÷ 670] x 100 = -68.96%
Formula
Percentage change = [(208 - 670) / 670] x 100
Subtract the new number by the original number
208 - 670 = -462
-462 ÷ 670 = -0.6895522388059702
-0.6895522388059702 x 100 = -68.96%