-78.53% is the change from 545 to 117
Calculation steps:
[( 117 - 545 ) ÷ 545] x 100 = -78.53%
Formula
Percentage change = [(117 - 545) / 545] x 100
Subtract the new number by the original number
117 - 545 = -428
-428 ÷ 545 = -0.7853211009174312
-0.7853211009174312 x 100 = -78.53%