-77.8% is the change from 455 to 101
Calculation steps:
[( 101 - 455 ) ÷ 455] x 100 = -77.8%
Formula
Percentage change = [(101 - 455) / 455] x 100
Subtract the new number by the original number
101 - 455 = -354
-354 ÷ 455 = -0.778021978021978
-0.778021978021978 x 100 = -77.8%