-70.61% is the change from 660 to 194
Calculation steps:
[( 194 - 660 ) ÷ 660] x 100 = -70.61%
Formula
Percentage change = [(194 - 660) / 660] x 100
Subtract the new number by the original number
194 - 660 = -466
-466 ÷ 660 = -0.706060606060606
-0.706060606060606 x 100 = -70.61%