-76.85% is the change from 661 to 153
Calculation steps:
[( 153 - 661 ) ÷ 661] x 100 = -76.85%
Formula
Percentage change = [(153 - 661) / 661] x 100
Subtract the new number by the original number
153 - 661 = -508
-508 ÷ 661 = -0.7685325264750378
-0.7685325264750378 x 100 = -76.85%