-69.57% is the change from 506 to 154
Calculation steps:
[( 154 - 506 ) ÷ 506] x 100 = -69.57%
Formula
Percentage change = [(154 - 506) / 506] x 100
Subtract the new number by the original number
154 - 506 = -352
-352 ÷ 506 = -0.6956521739130435
-0.6956521739130435 x 100 = -69.57%