-61.66% is the change from 506 to 194
Calculation steps:
[( 194 - 506 ) ÷ 506] x 100 = -61.66%
Formula
Percentage change = [(194 - 506) / 506] x 100
Subtract the new number by the original number
194 - 506 = -312
-312 ÷ 506 = -0.616600790513834
-0.616600790513834 x 100 = -61.66%