HO, N, to Z conversion. What Percent?

I got a stupid easy question but it kills me because I am mathematically challenged. What percent would I push on copy machine to shrink down something from HO or z into Z scale?
Thanks!!

source_scale / target_scale * 100

1: 32 / 220 * 100 = 14.54%
H0: 87 / 220 * 100 = 39.54%
TT: 120 / 220 * 100 = 54.54%
N: 160 / 220 * 100 = 72.72%
Z: 220 / 220 * 100 = 100.00%
T: 450 / 220 * 100 = 204.54%

Conversion Chart posted on "Recent Pictures". I'll try to post it here.--- It didn't work

I found it thanks!! Oh I should have said N to Z scale...even I am not that mathematically:laugh: challenged